基于RLS算法的阵列天线抗干扰性能研究

本文基于空域调零算法中的递推最小二乘算法，对不同阵列天线模型进行了导向矢量的建立，使用MATLAB仿真对比了4元共形阵列天线与4元平面阵列天线在同一干扰信号下的抗干扰性能。验证分析表明，共形阵列天线存在阵元间信号接收增益不一致的现象，会影响算法的抗干扰性能。相比之下，平面阵列中的加心圆阵抗干扰效果较好且算法稳定性较高，能在干扰信号方向上产生准确的“零陷”。

Research on Anti-jamming Performance of Array Antenna based on RLS Algorithm

Aiming at the influence of antenna array on the performance of the algorithm in the anti-jamming navigation system,based on the recursive least squares algorithm in the airspace zeroing algorithm,the steering vector of different array antenna models was established,and using MATLAB simulation,anti-interference performance was compared of array antenna and 4-element planar array antenna under the same interference signal.Validation analysis shows that there is a phenomenon of inconsistent signal receiving gain between the array elements of the conformal array antenna,which will affect the anti-interference performance of the algorithm.In contrast,the centered circular array in the planar array has a better anti-interference effect and a higher algorithm stability,which can generate an accurate"zero trap"in the direction of the interference signal.